Leaflet is a modern open-source JavaScript library for mobile-friendly interactive maps.
It is developed by Vladimir Agafonkin with a team of dedicated contributors.
Weighing just about 33 KB of JS,
it has all the features most developers ever need for online maps.

Leaflet is designed with simplicity, performance and usability in mind.
It works efficiently across all major desktop and mobile platforms out of the box,
taking advantage of HTML5 and CSS3 on modern browsers while still being accessible on older ones.
It can be extended with a huge amount of plugins,
has a beautiful, easy to use and well-documented API
and a simple, readable source code that is a joy to contribute to.

Getting Involved

Third-party patches are absolutely essential on our quest to create the best mapping library that will ever exist.
However, they’re not the only way to get involved with the development of Leaflet.
You can help the project tremendously by discovering and reporting bugs, improving documentation,
helping others on the Leaflet forum
and GitHub issues,
showing your support for your favorite feature suggestions on Leaflet UserVoice page,
tweeting to @LeafletJS
and spreading the word about Leaflet among your colleagues and friends.

Check out the contribution guide for more information on getting involved with Leaflet development.